Sheet delivery mechanism for printing presses



April 9, 1935. w H. M. BARBER 1,997,290

SHEET DELIVERY MECHANISM FOR PRINTING PRESSES Fild MaQrch s, 1954 :5Sheets-Shet 1 INVENTOR ATTORNEYS 3 Sheets-Shet 2- INPQDVTOR 14TT0RAU?Y5I|lllllIllIIIl illlllll in glslgun lal orwi l lslgl l lal l f. 1 Aw uzw9 .\M1

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April 9, 1935.

H.M.BARBER SHEET DELIVERY MECHANISM FOR PRINTING PRESSES Filed March a,1954 April 9, 1935. H, M. BARBER SHEET DELIVERY MECHANISM FOR PRINTINGPRESSES Filed March 3, 1934 3 Sheets-Sheet 3 IN VENTOR A TTORNE Y5Patented Apr. 9, 1935 V A SHEET DELI-VERY MiionANrsM FoR i PRINTINGPREssEs PATENT Howard M. Barber, Pawcatuck, Conn., assignor to C. B.Cottrell & Sons Company, Westerly, R. I.,

., a corporationof Delaware jApplication March a, 1934, Serial No.713,307

13 Claims.

I have discovered that sheets can be delivered from a rotary printingpress at a higher speed by the use of side grippers rather than frontvgrippers but that. front'g'rippers are more micient in taking the sheetsfrom the rotary sheet carrier, as, for instance, the impressioncylinder. Therefore, the object of my invention, generally, is toprovide a sheet delivery comprising coacting front and side grippers,the front grippers being caused to take the'sheets from the rotary sheetcarrier and thereafter release the sheets to the side grippers-and theside grippers being caused to take the sheets from the front grippers Iand thereafter release the sheets at the delivery point.

a The object of my invention, more particularly, is'to provide a sheetdelivery of theabove character in which the side grippers areadjustable, for handling sheets of different widths.

My invention, more particularly, comprises an endless delivery carrierhavingside chains for mounting the front and oppositely disposedsidegrippers in sets along the same, the said sets of front and sidegrippers being properly positioned along the endless carrier, for takingthe sheets from the rotary sheet carrier andjthe oppositely disposedside grippers of each set being, adjustable toward and away from eachother, forhandling sheets of different widths. H t

A practical embodiment of my invention is represented in theaccompanying drawings, in which Fig. 1 represents in end'elevation somuch of a rotary printing press as includes my improved sheet delivery;7 r

Fig. 2 represents a sectiontaken in the plane of the line I I--II ofFig; 1, looking in the direction of thearrows; three sets of front andside grippers beingshown on the endless delivery carrier; g r

Fig. 2a represents adetail section showing the means for feeding sheetsto the impression cylinder; i 1

Fig. 3 represents a transverse section, on an enlarged scale, showingone of the side chains of the endless carrier and the parts adjacentthereto; t

' Fig. 4 represents a section taken in the plane of the line IV--IV ofFig. 3, looking in the directionof the arrows}: "Fig. 5 represents'asection taken in the plane of the line -V-V of Fig. 3, looking in thedirection of the arrows;

Fig. 6 represents a section taken in the'plane' of the line VIVI of Fig.tion of the arrows;

3, looking in'the direc- Fig. 7 represents a section taken in the planeof the line VIIVII of Fig. 6, looking inthe direction of thearrows; andI Fig. 8 represents'a section. taken in jtheplane of the lineVIII-VIII-of Fig. 6, looking vinjthev direction of the arrows;

The impression cylinder 1 which acts as a rotary sheet carrier isprovided in the present instance with two diametrically opposed headgrippers 2 operated by a suitable cam 4 to take the sheetsat one pointfrom asheet feeding cylinder 3 andto release the sheets at another pointtomyimproved sheet delivery. j

This sheet delivery is shown as comprising an endless carrier having twohorizontally disposed.

sidech'ains 5 traveling in parallel endless paths aroundthe usualsprocket wheels 6. V

Front and side grippers are carried by the side chains! ofthe endless'deliveryfcarrier, said,

grippers being 'arranged in sets comprising two opposed side grippersand their coactin'g'jfront gripper. Each'set of these front and sidegrippers is constructed, arranged and operated as follows: A fixedcrossbar I and a rocking crossbar 8 are mounted at their ends individedbrackets'carried by the side chains 5. 'Each divided bracketcomprises anupper member 9 and arlower member-v lil. Two'pins l2 areclamped at their innerends between'the upper and lower'members Sandlllof the divided'clamp by a suitablescrewbolt II, which pins l2 projectthrough the pivot holes'of one of the links of the side chain 5 and arethere fastened by removable cotter pins l3. i f.

The front grippers of a set comprise stationary jaws l4 fast on thefixed crossbar l and coacting movable jaws l 5 fast on therockingcrossbar 8. t Each' of the pair of oppositely'disposed sidegrippers of a set comprises coacting' stationary and movable jaws l6 andI! carried by ,a divided collar comprising twohalf members l8 ;and l9clampedtogether around the fixed crossbar! by suitable screw bolts 20.The fixed jaw' I Bforms an integral part of the half member: [8 of thedivided collarand it is provided withza'studil on which the hub 22of-the 'movablefjawh l! is pivoted. This hub 22 is also provided with atoothed segment 23 anda spring engaged arm ,2 4. An overthrow spring 25is located between the outerend of the arm 24 and the outer end ofan arm26 projecting from the stationary jaw 16. This spring 25 is so arrangedthat itwill' yieldingly hold the movable jaw I! in open or closed,positions.

' A studZ'l projecting from the half member l8,

28 of a rock lever, one arm 29 of which carries a cam controlled studor'roller 30 and the'other arm 3| of which carries a toothed segment 32meshing with the toothed segment 23 of the movable jaw IT. A lug33servesas a stop for limiting the opening movement of the movable jaw ll.

The means for controlling the operation ofthe front grippers of a set isas follows: 7 V

A .cam 34 islocated in position tovengage a stud or roller 35 carried byan arm 36 fast on the rocking bar 8 to cause the jaws 14, I5 of the;

front grippers to take a sheet from thegrippers 2 of the impressioncylinder I as each set of front and side grippers on the endlessdelivery carrier reach the proper point of transfer from the impressioncylinder. Another cam 3-1 is located in position to cause the frontgrippers torelease the leading ends of the-sheets after the sheetshave'been taken by the jaws l6, opposed side grippers of the set. a VThe means for controlling the operation of the sidegrippers of the setis as follows:

Two cams 38 are" located in position to cause the opposed side grippersof a set to take the sheets from .the' front grippers of their set and nt the to release the sheets as they reach the delivery point, i. e., aposition over'the delivery pile '39. These cams 38 are adjustablysecured along the frame crossbars 43 as'by set screws 4|.

The opposed side grippers of each set may be adjusted laterallyof theendless delivery carrier toward and away from each other, for handlingsheets of different widths. This is done by moving the stationary andmovable jaws l4 and I5 of the front grippers' along their fixed androckingbars 1 and 8 respectively, the gripper jaws being secured intheir adjusted positions as by the set screws 42 and 43' respectively.

It will be understood that the cams 38 on the crossbars 40 must beadjusted laterally of'the endless carrier along the crossbars, to bringthem a into their, operative position with respect to their respectiveside grippers.

' In operation: The front grippers of each set are operated at theproper point to take a sheet from its grippers on the rotarysheetcarrier. As the sheet. travels toward. its delivery point the frontgrippers are released from the sheet after the side grippers of the sethave grasped the sheet. These side grippersin turn are then operated torelease the sheet as it reaches its delivery point. I V I From the abovedescription it will be seen that I have provided simple and efficientmeans for delivering sheets rapidly from a rotarysheet carrier, such,for instance, as the impression cyl-;

inder of a rotary sheet feed printing press," said delivery meansincluding coacting front and, side grippers. H M I I It is-evident thatvariousxchanges may be re-,

' sorted to in the construction, form and arrangement of the severalparts without departing from the spirit and scope of my invention, andhence I do not intend to be limited to the particular embodiment herein,shownand described, but What I claim is:

l. Arotary sheet'carrier and an endless sheet delivery thereforcomprising front and side grippers, means for causing the frontgrippersto' take the sh ets from the rotary sheet carrier,: means forcausing the front -grippers to. release the sheets to the side grippers,and meansfor causing;

the side grippers to take the sheets from theirfront grippersand releasethe sheets at the delive ypoint1 q 1 T '3. A rotary sheet carr'ier andan endless sheet delivery therefor comprising front and side gripthesheets from the rotary sheet carrier, means for causing the' frontgrippers to release the sheetsto'the sidegrippers, and means for causingtheside grippers to take the sheets from their front grippers andrelease the sheets at the delivery point, the sidegrippers beingadjustable laterally, for handling sheets of different widths.

- i. Arotaryslieet carrier-and an endless sheet delivery thereforcomprising front and side grippers arranged in sets, means for causingthe front grippers of a set to take the sheets from the rotary sheetcarrier, means for causing the front grippers to release the sheets tovthe side grippers of the set, and means for causing the said. sidegrippers to take the sheets from their front grippers and release thesheets at the delivery point,.the side grippers being adjustablelaterally, for handling sheets of different widths.

5. A rotary sheet carrier and a sheet delivery therefor. comprising ane'ndless carrieiyfront and side grippers mounted thereon, means forcausing the front grippers to take the sheets from the rotary sheetcarrier, means for causingthe front grippers to release the sheets tothe side grippers, and means for causing the side grippers to take thesheets from their front grippers and release the sheets at the deliverypoint. r v

6. A rotary sheet carrier and a sheetdelivery therefor comprising anendless carrier, front and side grippers mounted thereon in sets, meansfor causing the front grippers of a set to take the sheets from therotary sheet carrier, means for causing the front grippers to releasethe sheets to theside grippers of the set, and means for causing thevsaidside grippers to take the sheets from their front grippers andrelease the sheets at the delivery point. U

71A rotary sheet carrier and a sheet delivery therefor comprising anendless carrier, front and side grippers mounted thereon, meansfor-causing the front grippers to take the sheets from the rotary sheetcarrier,- means for causing the front grippers to release the sheets tothe side grippers, and means for causing the side grippers to take thesheets from their front grippers and release the sheets at the deliverypoint, the side grippers being adjustable laterallyof the endlesscarrier, for handling sheets of different widths.

8. A rotary sheet carrier and a sheet delivery therefor comprising anendless carrier, front and causing the front grippers of a set to takethe sheets from the rotary sheet carrier, means for 'causing. the frontgrippers to' release the sheets to the side grippers; of the set, andmeans for causing the said side grippers'to take the sheets from theirfront grippers and release the sheets at the delivery point, the sidegrippers being adjustable laterally of the endless "carrier, forhandling sheets of different widths...

9. A rotary-sheet carrierjand asheet delivery therefor comprising anendless carrier, front and ,pers, means for causing the front grippersto take side grippers mounted thereon, two cams, one for causing thefront grippers to take the sheets from the rotary carrier and the otherfor causing the front grippers to release the sheets to the sidegrippers, and a third cam for causing the side grippers to take thesheets from the front grip- .pers and release the sheets at the deliverypoint.

10. A rotary sheet carrier and a sheet delivery therefor comprising anendless carrier, front and side grippers mounted thereon, two cams, onefor causing the front grippers to take the sheets from the rotarycarrier and the other for causing the front grippers to release thesheets to the side grippers, and a third cam for causing thesidecrossbar, means for adjusting the side grippers toward and away fromeach other along thefixed crossbar, to handle sheets of differentwidths,and

laterally adjustable cams for controlling the operation of the sidegrippers.

12. An endless sheet delivery carrier comprising-side chains, fixed androcking crossbars carried by said side chains, front grippers havingtheir fixed and movable jaws mounted on the fixed and rocking crossbarsrespectively, oppositely disposed side grippers'carried by said fixed. V

crossbar, means for adjusting the side grippers toward and away fromeach other along the fixed crossbar, to handle sheets of diiferentwidths, a

frame crossbar and camsadjustable along said' frame crossbar, forcontrolling the operation of the side grippers. V

13. An endless sheet delivery carrier comprising side chains, fixed androcking crossbars, mounting brackets therefor secured to said sidechains, front grippers having their fixediand movable jaws mounted on.the fixed and rocking crossbars respectively, oppositely disposed sidegrippers carried by said fixed crossbar, meansfor adjusting the sidegrippers toward and away from each other along the fixed crossbar, tohandle sheets of different widths, and laterally adjustable cams forcontrolling the operation of the side grippers.

HOWARD M. BARBER.

